What's the score? Jermaine has entered a bowling tournament. To prepare, he bowls five games each day and writes down the score of each game,
along with the mean of five scores. He is looking at the scores from one day last week and finds that one of the numbers has accidentally been
erased.
The four remaining scores are 249, 254, 278, and 265. The mean score of the five games is 262. What is the missing score?

287

Step-by-step explanation:

answer: for each 3 girls there is 2 boys . 3: 2

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step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.